Turkey, the country of long lasting Middle Ages, was a typical military-feudal state. In the time of its biggest expansion it was stretching on three continents and enclosed many nationalities of different economic, political, religious and cultural heritage. At the head of the state there was a sultan, the absolute leader who decided about life and death. Sultan was the embodiment of all parts of state government. He united supreme, military and religious authority. The main goal of the osman state was to capture territory and spread the islam, what required powerful and organized military forces. The more powerful military forces became, the more conquests were needed. Expansion of the empire was largely helped by religion – islam. Religion was the only restriction to sultans reign, as there was not any controlling institutions apart from principles of the Sharia. The authority was based on the army as ultimate holder of violence. The main parts of osman army were: cavalry, infantry and artillery. The biggest part od the army was based on cavalry sipahi. As there was used a timar system in Osman Empire for maintaining a strong army force, sipahi were rewarded for their military service by timar, and the size of timar depended on their contribution at the battlefield. Beside sipahi who were given land for their military sevices, there were kapikulu sipahis (sipahis of the Porte) who were paid for their military sevices from the state treasury. Apart from heavy sipahi cavalry, there was light cavalry – akincis, who got their payment from war booty. Osman army infantry was formed by elite forces of janissary. The janissary forces were formed by taking by force boys from conquered christian folks, and that kind of recruiting was known as „ blood payment“ or devsirme. Beside Sharia, which set the legal rules for the whole islam society, there was kanun law set by the state, respectively sultan.